An actuator 20 has a magnet 8 moved together with a moving lens frame 6, an SMA wire 14 capable of extending and contracting in a moving direction I of the moving lens frame 6 with execution or non-execution of energization thereof, a fixing member 9 made of a magnetic material attached to a distal end of the SMA wire 14, a pressing spring 16 which urges the fixing member 9 toward the magnet 8 along the moving direction I, and a stopper portion 31 which limits the movement of the magnet 8 along the moving direction I at a first position or a second position.
